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Finding the Fourth Proportional to 60,954.70, 91,395.60 and 31,430.20

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Solution

The fourth proportional to 60,954.70, 91,395.60 and 31,430.20 is: 47,126.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,954.70 : 91,395.60 = 31,430.20 : x
  2. Step 2: Convert to fraction form
    60,954.70/91,395.60 = 31,430.20/x
  3. Step 3: Cross multiply
    60,954.70x = 91,395.60 × 31,430.20
  4. Step 4: Simplify right side
    60,954.70x = 2,872,581,987.12
  5. Step 5: Solve for x
    x = 2,872,581,987.12/60,954.70
  6. Step 6: Final answer
    x = 47,126.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.